---
id: "framework-builder-skills-2026"
type: "framework"
source_timestamps: ["00:20:56", "00:21:18"]
tags: ["developer-skills", "career"]
related: ["concept-stack-literacy", "action-develop-stack-literacy"]
steps: ["Context Engineering (Managing what data feeds the agent)", "Eval-Driven Development (Building systems that autonomously drive toward verified results)", "\"Stack Literacy (Understanding infrastructure layers", "vendor trade-offs", "and competitive moats)\""]
sources: ["s52-orchestration-layer"]
sourceVaultSlug: "s52-orchestration-layer"
originDay: 52
---
# Framework: Critical Builder Skills for 2026

## Summary
The three core competencies that software engineers and technical leaders must master to successfully build and deploy agentic systems over the next few years, moving beyond basic prompt engineering.

## The three skills
1. **Context Engineering** — managing what data feeds the agent: which documents, which memory snapshots, which tool results, in what order, with what summarization. Determines how reliably the agent makes good decisions.
2. **Eval-Driven Development** — building systems that autonomously drive toward verified results, with evaluations baked in from day one rather than bolted on. Prevents agentic regressions and gives your CI a meaningful signal.
3. **[[concept-stack-literacy]]** — understanding the six infrastructure layers ([[framework-the-agent-stack]]), vendor trade-offs (e.g., ephemeral vs. persistent sandboxing, standalone vs. model-native memory), and where your competitive moat actually lives.

## How to operationalize
- Pair this framework with [[action-develop-stack-literacy]] for stack literacy.
- Begin investing in evals before scaling agent counts (otherwise [[concept-agent-sprawl]] arrives without observability).
- Treat context engineering as a discipline, not a prompt-writing afterthought.